This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 697 |
| 3 | 1333 |
| 4 | 1909 |
| 5 | 3901 |
| 6 | 96361 |
| 7 | 130153 |
| 8 | 163201 |
| 9 | 2708413 |
| 10 | 2768581 |
| 11 | 4013833 |
| 12 | 4312681 |
| 13 | 4658449 |
| 14 | 6392257 |
| 15 | 7478041 |
| 16 | 8766061 |
| 17 | 8883841 |
| 18 | 9427657 |
| 19 | 9699181 |
| 20 | 12064333 |
| 21 | 14489437 |
| 22 | 15042553 |
| 23 | 16260901 |
| 24 | 16904101 |
| 25 | 18116737 |
| 26 | 21396313 |
| 27 | 28005301 |
| 28 | 29751229 |
| 29 | 31837801 |
| 30 | 36640993 |